Presented by:Eng. A.Aziz Al Alawi

Director,Electricity Distribution Directorate

Kingdom of Bahrain

ROAD MAP FOR IMPROVEMENT OFSAIFI , SAIDI & CAIDI

3rd Arab Union of Electricity,Electricity Distribution Conference

Salalah-Sultanate Oman27th – 29th August 2012

Contents Road Map for Improvement of SAIFI , SAIDI & CAIDI DMAIC Approach Learning From The Current Experience Electricity Distribution Directorate (EDD) Maintenance Process Operational Loading Policy of Feeders Maintenance Policy EDD Maintenance Strategies Maintenance Criteria Maintenance Program 2011-2012 HV / LV Reinforcement & Replacement Program 11kV Cable Fault Elimination Improvement Program 2012-2013 SAIFI, SAIDI, CAIDI Targets Recommendations

Road Map for Improvement of SAIFI , SAIDI & CAIDI

Maintenance Practice

Maintenanceprograms

Reinforcement & Replacement

Programs

Improvement

Improvement

Improvement of KPI (SAIFI, SAIDI, CAIDI)

Achievement of Target

11kV & LV Cable Fault Elemenation

KPIsAn Assessment tool for improvement process

Presented byEngineer Heyam Nassr

Operation & Loading Policy

DMAIC APPROACH

Define(D)

Measure(M)

Analyze(A)

Implement(I)

Control(C)

Condition Monitoring Program Condition

Based Maintenance Asset

Replacement Program

Network Protection Systems

Remote Controlling and Monitoring Capabilities

Operational Readiness and Fast Response

Generator Mobilization

Prevention

Containment

Prevention

Containment

Reliability and Quality- Power Delivery

Decide What To Do Based On Our Own Experience

Policies, SOPs, Design, Specifications, Strategy

Fixed Time Maintainence

Learning From The Current Experience

Maintenance

FUNCTION

Maintenance

OBJECTIVES

Establishing a

PLAN to achieve

the maintena

nce Objective

Building an

ORGANIZATION to carry out the

plan

CONTROL

systems to check

if the plan and organization are meeting

the objectives and to correct if necessar

y

Ensuring and Controlling the reliability of HV & LV

Networks

To align EDD’s objectives with EWA‘s objectives of achieving

the agreed N/W operating conditions

and quality, within the accepted N/W

conditions and safety standards and at minimum cost.

• 3-Lines Maintenance• Wall boxes, Service

Twin Wires, 11kV Over head lines and s/s

• 3 Maintenance Depots of Muharraq, Manama and Riffa

• Outsourcing .• Implementing of Asset

Management Concept.

Controlling and monitoring of Productivity,

Effectiveness, and Organization Efficiency.

EDD Maintenance Process

11kV network• 150A(3 MVA) up to open point for copper cable feeders (50% cable

loaded)• 125A (2.5MVA) up to open point for aluminum cable feeders (50%

cable loaded)• Controlled by Distribution Control Centre (DCC)

400V network• Maximum feeder load is 150kVA

(5*60Amp, 3*100Amp, 2*160Amp or 1*250Amps)• Controlled by Low Voltage Operations

Operational Loading Policy of Feeders

Maintenance Scheduling: • Planned maintenance will be scheduled on an annual and monthly basis and be

approved, in advance by DCC & LV Operation, as appropriate.• Preventive maintenance and corrective maintenance should be planned and

scheduled jointly by Maintenance & Operations groups.• Overtime will be authorized based on the related Standard Operating Procedure

(SOP).

Materials Requirements: • Maintenance planning will include identification of requirements of materials and

manpower; EDD and outsourced.• Materials Requirements will be identified and expressed by Maintenance Group.• Planning & Materials section will then deliver materials as and when specified.

Safety and Operating Procedures: • HV and LV isolation works shall be done in accordance with the standard operating

procedures.• Mobilization of generators connection shall be done in accordance with standard

operating procedure.

Maintenance Policy

3-lines Maintenance Strategy. Continuous improvement of the network: Reinforcement and Correction

Maintenance. Fully implementation of CASCADE, via computerized Maintenance

Management System. Staff training and development (Multi skilling) Deployment of new technologies such as Responder, to enhance quality of

our services.

EDD Maintenance Strategies

First Line Maintenance Strategy

o To Carry-Out Inspection:• Objectively, by using Infrared Camera for inspection of

Transformers, LV Panels & 11kv Overhead), 11KV Network partial Discharge test. (Condition Based Maintenance)

• Subjectively, by visually inspection of HV and LV transformer connection, oil checking, silica gel checking, etc.

o To Respond to Inspection Results: • Cleaning and minor rectification of equipment defects of LV

Panel Board and Ring Main Units (RMUs)• Refurbishment and cleaning of wall boxes.

3-Lines Maintenance Strategy

Second Line Maintenance Strategy

o Replacement of defective items/components based on:• Inspection of the First Line Maintenance• Time Schedule Maintenance.

Third Line Maintenance Strategy

o Life cycle Asset Assessment:• Transformers (35-40 years),• RMUs Oil (25 years) and RMU SF6 (15 years),• LV Board (30 years),• HV Cables (40 years), LV cables (35 years), • 11kV poles switches (35 years), • Air Break Switches(35 years)

Electrical Equipment Frequency

Distribution Substation Equipments Four Years

Intake Substation Equipments Two Years

11kV Overhead Lines Two Years

Wall Boxes Three Years

Substation Civil Structures

• Based on the annual inspection of S/S Maintenance Section, urgent repairs will be carried out by Civil Unit.

• For those substations which are ten years or older, a five yearly inspection is carried out by civil unit.

• Block work enclosure for package units and replacement of wooden doors is on going.

Maintenance Criteria

3. Replacement of 20 km of service twin wires.4. Maintenance of 1,000 Substations.

The target will be increased to 4,000 Substations (S/S) for 2012,2013 . 5. Inspection of all overloaded Substations with emphasis on equipment with

history of repeated faults.6. Replacement of 200 units of transformer RMUs and LV Panels in the

Substations.7. Inspection and maintenance of 11 kV circuits terminations in Primary S/S, and

in coordination with Transmission Directorate program.

Nov 2011

Dec Jan2012

Feb Mar Apr May Jun Jun Aug Sep Oct Nov Dec 2012

1. Inspection and Overall of All 11kV O/H Lines

2. Maintenance of 15,000 Wall Boxes

Maintenance Program 2011-2012

8. 11kV Partial Discharge measurements for feeders whose load is more than 300Amp.

9. Upgrade Transformers of which loads exceed 80% of it capacity.

10. Verifying functionality of 11kV protection system in RMUs.

11. Replace any RMUs of which fault current capacity is lower than 350MVA.

12. Install Moulded Case Circuit Breakers (MCCB) at Customer side.

13. Using Mini Feeder Pillars for the 400 Volts N/W.

14. Activate/ install new Earth Fault Indicators (EFIs).

15. Procurement of advanced HV Cable Fault locating equipment.

Maintenance Program 2011-2012

HV / LV Reinforcement & Replacement Program

o HV reinforcement 43

o HV cable replacement 5

o LV reinforcement 496

o LV replacement 71

o Uprating transformer from 1000kVA to 1500KVA 81

11kV Cable Fault Elimination

Partnership with Electricity Distribution Directorate Pre-qualification of Contractors Work Specifications / Job Catalogue Training on proper practices - Contractors Cable Joint procedures / Tools Procedure for Contractor reporting of materials defects Qualification of Supervisors/inspectors Supervisors Procedure and List of Actions by the Supervisors Maintain proper record of Joints/Cables? Tagging system Procedure for Supervisor reporting of materials defects /bad

workmanship Training on proper practices – EDD Supervisors

Automation of RMU Operations Automation of Earth Fault Indicators MCCB (Moulded Case Circuit Breakers) to control unauthorized load To replace the LV Underground joints with Mini Feeder Pillars Activation of CASCADE system (Computerised Maintenance System) Utilization of Vehicle Tracking System

Improvement Program 2012-2013

SAIFI, SAIDI, CAIDI Targets

The number of interruptions 2011 and 2012

The interruptions in 2012 increased due to unauthorised loads.

SAIFI, SAIDI, CAIDI Target

Significant improvement is registered in SAIFI & SAIDI in 2012 over 2011.

 2011

(April-May-Jun-Jul)2012

(April-May-Jun-Jul)%

ImprovedTarget

SAIFI0.7

interruptions/customer0.2

interruptions/customer71.43%

0.5interruptions/customer

SAIDI107

minutes/customer77

minutes/customer28.04%

25minutes/customer

CAIDI143

minutes/interruptions379

minutes/interruptions-165.03%

50minutes/interruptions

Recommendations

Learning from the current experience and decide what to do based on our experience

People Drive Performance – enabling more people across the enterprise to increase competitive advantage

Adaption of 3 skilled capabilities (Monitoring, Analyse, Plan)

• Superiority in Monitoring – The monitoring capabilities will allow to execute on strategy and to increase the competitive advantage by improving on benchmarks on day-to-day operations.

• Superiority in Analyse – The analytic capabilities can be leveraged to enhance monitoring and planning capabilities.

• Superiority in the Plan – The capability in plan can attain the power to compete and to increase monitor plan & budget forecasts more broadly across the board.

T H A N K Y O U